Heena Sharma, Shubhankat Vats and, Rashmi Gupta Solutions for Chapter: Motion, Exercise 1: Check Point 01

Write the SI unit of both distance and displacement.

State whether displacement is a scalar or a vector quantity.

What is the displacement of a satellite when it makes a complete round along its circular path?

Check whether the distance covered and the magnitude of the displacement are same or not? Justify.
A passenger in a train travels from Delhi to Kolkata.

Check whether the distance covered and the magnitude of the displacement are same or not? Justify.
A raindrop falling in still air.

Check whether the distance covered and the magnitude of the displacement are same or not? Justify.
An athlete completes one lap in a race.

After studying the motion of a ball rolling on a straight line as shown in figure:

Find its distance and displacement covered
(i) when it rolls from $\mathrm{P}$to $\mathrm{Q}$ and then to $\mathrm{R}$ (i.e. $\mathrm{P}$ to $\mathrm{Q}$ to $\mathrm{R}$) and
(ii) finally comes back to $\mathrm{P}$ (i.e. $\mathrm{P}$to $\mathrm{P}$) (take, $\mathrm{P}$as reference point).